Lamp-receptacle.



PATBNTBDAUG. 2.7, 1907. H. W. LAWRENCE. 'I LAMP BBCBBTAGLB.-

APPLIOATION FILED Marzo'. isos".

@44 van@ y.; MM.. y W.. fw

LAMP RECEPTACLB. APPLIUATION Hum AUG.20.1906.

2 SHBETSAEEET 2.

l showing the various parts of the receptacle in position nAnnYjwALLAoE LAWRENCE, or Trinitron NEW JERsEY LAMP-ascendiente. I

No. seams.

Specification of Letters Patent.

ratentednug. aaieo'rfj l e Application liled August 20,1906. Serial No. 831,292.'

lTo all 'whom 'it muy concern: l

Be it known that I, HARRYNVALLAC LAWRENCE,

a citizen of the United States, residing at Trenton, in.

the county of Mercer and State of New Jersey, have invented certain new and useful Improvements in Lamp-Receptacles, of which the following isA a iull, clear, and exact description.

` This invention relates to lamp receptacles 'and pertains particularly to a form of receptacle to he used with lamp lclusters, electric signs, banks of incandes#` centlamps, vand all purposes where lamps are ass'elnr another in series or multiple. i

lhe principal object of 'the inventin is to provide, as an article of manufacture, a complete lamp receptacle in the form of the usual threaded shell, the threaded shell in this'case constituting the housing and supporting framework of all the parts. In other words lV provide in the torni oi a threaded shell, a unitary structure embodying all the parts oi a complete socket and the Vterminal connections ior an incandescent lamp. This l article of manufacture, complete in itself, is,l however,

The invention therefore lies in the receptacle as anl article of manufacture, for which purposes it is complete in itself. In use, however, the receptacle is always contained in a separate block or base.

With the above and other objects in' view, the irivention consists oi the features of construction herein4 after described and claimed.

In the drarvingsnFigure l is a sectional view showing the application of receptacles embodying Athe principles ot my invention; Fig. 2 is a detail sectional vi ew ready to be assembled; Fig. 3 is a sectional view show ing the complete receptacle. Fig. 4 is an external,

vbottom plan viewoithe annular block or support shown in Fig. l, with a group of my receptacles mounted therein, and Fig. 5 is a detail sectional view on the line 5-5 of Fig. 4.

In order to malte the necessary circuit connections with any form of incandescent lamp, a special receptacle is required, comprising a socket to receive the lamp and terminal clips for connection with the circuit Wires.

On account of insurance regulations, and other requirements oi practice, the usual receptacle is a large and rather cuxnbrous structure of porcelain and brass, not weli suited to the purposes of interior decoration.

l therethrough.

Incarrying out the present Iinvention I do away with this form of receptacle and substitute inlieu'there'- oa structure having all itsessential characteristics, that is, the lamp socket and terminals, but which is practically no larger than the base oi an ordinary :in-

candescent lamp.

With a receptacle of this formit is possible to group' the lamps inany way desired for interior decoration, and yet no unsightly parts will be visible to mar the ornamental effect. l f

Referring now to the drawings, in which like partsare indicated by the same reference sign, l denotes athreaded shell of which the internal surface 2 is adapted to receive an ordinary incandescent lamp, while the external surface 3, being,r necessarily also threaded,- is adapted to be screwed into a cavity of correspondingk form. The lower edge of the shell is iianged inward as shown at 4 and is perforated with a comparatively large aperture 5.

6 indicates a button of insulating material which is centrally apertured at 7 and has a portion Shot a diameter corresponding to the hole 5 and adapted to project The main portion o the button 6 is of a diameter to closely tit Within the shell l and shouln der against the flange 4 thereof.

9 indicates an insulating washer having a' centra-l. hole l0 of a size to lit over the reduced portion 8 of the button 6. The thipkness of the washer is such that when the parts are assembled, the lower surface of thewasher lies an appreciable distance from the end ofV the button, as clearly shown in Fig. 3.

ll indicates a metallic plate preferably circular, and having a threaded hole l2. This hole is adapted to receive a screw 113 which is passed through the various parte and which in turn finally receives the nut ld at its extremity.

For the purpose of making the terminal connections, special metallicclips are ordinarily used, although ordinary copper lwire can be employed iii-desired.

In the drawinggfs I have indicated sheet metal clips l5 and 16, clip l5 having an aperture I7 corresponding to thediameter ofthe reduced portion of the button 6, while the clip 16 has a hole 18 of sufficient size to 'receive the screw l. The parts are assembled with the clip l5 in contact with the flange i ofthe threaded shell, and the clip 1G between the plate ll and the nut lll. Screw i3 `therefore forms the central stud contact for the' lampmand the clip 1G the circuit terminal therefor. The clip lyisin direct connection with the threaded shell and constitutes the terminal therefor.

lt Willdbe observed that while the electrical connections are `thus eiiciently made, alljof the parts of opposite polarity are separated by an adequate partition of insulating material. Thelreduced portion 8 of l the button ii cooperates with the insulating washer 9 ino t to separate the clip' 15 at all points fromvthe plate'll and the central screw. But the presence of this insulating partition does not impair the clamping of the metallic parts on' account of the fact that a space-,is left between the button 6 and the plate l1, as shove stated.

In use it is merely necessary to obtain a block or support 19, recessed with suitableA cavities 20 formed to receive the threaded shells 1. For temporary pure poses, the support 19 need not be either iireproof or insulating in character, but for interior and. perma-r' nent insulations, it is best to have the support 19 of porcelain. In this way the-insurance regulations are` complied with as fully as by the useof any standard receptacle. l I l l In Fig. 1 1 have illustrated the clips 15 connectedto the threaded shells while the clips 16 are in con-I nection with the central studl contacts. This would be the arrangement for ordinary multiple Wiring. In Figs. 2 and 3 the clips l5 and 16 are bent so as tovbe capable of connection with a threaded shell and With a central stud contact at their respective ends. l This arrangement would be the one employed for series' wiring. In case the lamps are distributed in such a Way that their axes are in different and non-parallel planes, the various clips 15 and 1'6 can always be bent so as to accommodate any arrangement.

The clips 1.5 and 16 being pivoted to or flexibly connected to the different receptacles, the latter are capable of being mounted upon a common support in any desired relative arrangements or positions. The

.circuit wires will be respectivelyI connected toany' -pair of, the clips 15, 16, in any suitable. way.

Having described my invention, I olsimz- 1. In a lamp receptacle of Athe class described, a threadedv shell having an internal flange, a button received ln said shell and having a reduced portion .projecting througii` said flange, an insulating washer adapted to lit over the reducedpor'ti'on of said hutten', a screw passed tlu'onimilli` said button and a plate received on Asaid screw mrd-a hut threaded on said screw to clamp said plate upon said washer. v

2. 'In combination with a base of any suitable character havingr threaded recesses therein, a lamp receptacle cx-y teriorly threaded to .llt said recesses, the corrugntions of said exteriorlythleaded portions constituting interim-ly lthe 'threads of the lamp receptacle, said lamp receptacle 'by said shell insulated therefrom and removable there-y with, and means for making`the-temilnaLcoimcctions with said shell and contact.

f4. In'combination with a base having threaded recesses therein, a threaded shell, constituting a lamp receptacle and formedto he screwed into said recesses, said shell having an insuitlng button contained therein vand wholly supported thereimq' and a central 'stud within said button and whollysnpported thereby.

In wi'tnesswhereof, I subscribe my signature, in the presence of 'two witnesses.

l HARRY WALLAcn LAWRENCE. Witnesses:

lPHILIP H. FmLDINo,

.Dassin M. FABIAN. 

